Slowly but surely, Haiku is moving towards their very first alpha release. It 'self-hosted' for the first time in February of this year, but it did require a few hacks to work properly. The need for hacks was removed April 1st (what's in a date) by Bruno G. Albuquerque. Recently, some more progress has been made.

Since just about every PC sold out there is dual/quad core, they should fix the horrible SMP problems before even thinking about alpha releases... It's a promising OS, but I've found it to be very unstable.